Lewis, C. S. (2001). The Screwtape letters: With Screwtape proposes a toast (HarperCollins edition.). HarperOne.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLewis, C. S. The Screwtape Letters: With Screwtape Proposes a Toast. HarperCollins edition. New York: HarperOne, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLewis, C. S. The Screwtape Letters: With Screwtape Proposes a Toast. HarperCollins edition. HarperOne, 2001.
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